/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/MeshOpPreviewHelpers.h
Allow an external function to safely access the PreviewMesh's mesh
true if ProcessFunc was called
bool ProcessCurrentMesh ( [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void(const [UE::Geometry::FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) &)> ProcessFunc, bool bOnlyIfValid )